Keysight SL1200A Series Operating Instructions Manual page 37

Scienlab Regenerative AC Emulator – SL1200A Series – Operating Instructions
The internal emergency stop chain is designed redundant (2 channels). The
following table shows a short description of each connection terminal:
Pin assignment Description
Channel 1:1b – 3b Connection terminals for first external emergency stop push button
(2 channels, ex works pre-equipped with jumper)
Channel 2: 2b – 5b
Channel 1: 4b – 7b Connection terminals for second external emergency stop button
(2 channels; ex works pre-equipped with jumper)
Channel 2: 6b – 8b
Channel 1: 9b-10b Feedback from internal emergency stop push button (2 channels; when
using a Scienlab Test Bench Guard for example)
Channel 2: 11b-12b
Channel 1: 13b – 14b Feedback system status emergency stop (from both the internal and
external emergency stop), conditions are as follows:
Channel 2: 15b – 16b
• if the safety relay is off (logic path is off), the feedback contacts of
• if the safety relay is on and an emergency stop (external or internal)
• if the safety relay is on and an emergency stop (internal or external)
17b – 18b Connection terminals for external release (when using a Scienlab Test
Bench Guard for example) (pre-equipped with jumper)
19b – 20b Feedback from internal key release switch
21 – 26 (optional) 21 – 22: neutral path through
23 - 24: feedback AC contactors
25 – 26: feedback DC contactors
Table 4: Pin assignment Release and Emergency stop In/Out
The figure below shows the overview of the emergency/safety contact:
Connection of external safety signals (illustration similar)
• External test release signal (2-pin)
OFF: test release withdrawn (output contactors and power stage
are blocked)
ON: test release given, test may be started (e.g. acknowledged by
software
• Emergency stop In/Out (2-pin)
• Jumpers have to be removed for connecting external release or
emergency stop in/out.
• Connection via the base plate of the output box according to
circuit diagram
• Option: connection Increased Safety Out
the safety relay are open,
is triggered, the feedback contacts of the safety relay are closed,
is pressed, the feedback contacts of the safety relay are open
Connection and Assembly 3
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